Round cooling tower has certain requirements for water quality, mainly because the quality of water directly affects the performance, life and operating cost of the cooling tower.
First of all, round cooling tower has requirements for the impurity content in the water. If the water contains too much suspended matter, silt and other impurities, it will be deposited inside the cooling tower, blocking the filler, nozzle and other components, reducing the cooling efficiency. At the same time, the accumulation of impurities will also increase the cleaning frequency and maintenance cost of the cooling tower. Therefore, the water entering the cooling tower is best pre-treated to remove most of the suspended matter and silt and other impurities. Generally speaking, the impurity content in the water can be reduced by precipitation, filtration and other methods.
Secondly, the hardness of water is also an important indicator. Water with too high hardness is prone to scale formation inside the cooling tower, especially on the filler and heat exchange surface. The formation of scale will reduce the heat exchange efficiency, increase energy consumption, and may even cause local overheating and damage to the cooling tower. In order to avoid the formation of scale, water with too high hardness can be softened, or scale inhibitors can be added to inhibit the formation of scale.
In addition, the pH value in the water will also affect the performance of the round cooling tower. Overly acidic or alkaline water will corrode the metal parts of the cooling tower and shorten the service life of the equipment. Therefore, the pH of the water needs to be controlled within a certain range. Usually, the pH of the water can be adjusted by adding a neutralizer to keep it in a neutral or near-neutral state.
The content of microorganisms in the water also needs to be controlled. If the water contains a large number of microorganisms, such as bacteria and algae, they will multiply and grow in the cooling tower, forming a biofilm, blocking the pipes and heat exchange surfaces, and affecting the cooling effect. At the same time, the metabolites of microorganisms may also corrode metal parts. In order to control the growth of microorganisms, methods such as adding bactericides and regular cleaning can be used.
In addition, round cooling towers also have certain requirements for the dissolved oxygen content in water. Excessive dissolved oxygen content will accelerate the corrosion of metal parts, so the dissolved oxygen content in the water can be reduced by deoxygenation and other methods.
In short, round cooling towers have strict requirements for water quality. In order to ensure the normal operation of the cooling tower and extend the service life of the equipment, the water entering the cooling tower needs to be properly treated to meet the water quality requirements of the cooling tower.
